package multithread;

//实现 Runnable接口
class MyThread implements Runnable{
    public void run(){
        System.out.println("hello Runnable");
    }
}

public class ThreadDemo {
    private static int count = 0;

    public static void main(String[] args) throws InterruptedException{

        //随便创建一个对象 作为锁对象
        Object locker = new Object();
        Object locker2 = new Object();

        //创建两个线程 每个线程都针对上述count自增50w次
        Thread t1 =new Thread(() -> {
            for(int i=0;i<500000;i++){
                synchronized (locker) {
                    count++;
                }
            }
        });
        Thread t2 =new Thread(() -> {
            for(int i=0;i<500000;i++){
                synchronized (locker2) {
                    count++;
                }
            }
        });
        t1.start();//开启线程
        t2.start();

        t1.join();
        t2.join();

        System.out.println(count);
    }
}



